What Do Aliens Look Like?

I wanted to find what I had peered upon long ago--my father's alien underground newspaper; so I searched on youtube.com to see what I could find. What scientists think aliens could look like describes key traits. I could not find drawings or representations of alien species within youtube.com so I turned to the web and searched the images--there's a few! The best representation I have seen of them is on the show People of Earth!